INSAS (Indian National Small Arms System) is a family of infantry arms consisting of an assault rifle, a light machine gun and a carbine. It is manufactured by the Indian State Ordnance Factory Board at its Ishapore factory. The Insas Assault Rifle is now the standard infantry weapon of the Indian Armed Forces.
The INSAS rifle is based on the famous Kalashnikov AK-47 action, but with many modifications. The basic gas-operated action (long stroke gas system, rotating bolt, and stamped steel receiver) is of the Kalashnikov pattern. The gas system is fitted with a manual gas regulator similar in design to that found on the FN FAL as well as a gas cutoff. The charging handle is positioned on the left side of the forearm; it is similar in position and design to the German HK G3 rifle.
The selector/safety switch is located on the left side of the receiver above the pistol grip, which allows single shots and three-round bursts. The rifle is fitted with a side-folding carrying handle, and either a solid or side-folding metal buttstock. Furniture is made of polymer with the stock using the butt-plate from Lee-Enfield rifles. Standard magazines are made from semi-translucent polymer and contain 20 rounds. Longer 30-round magazines of similar design are available for the INSAS LMG but can also be used in the rifle. The sights consist of a hooded front, mounted on top of the gas block, and a diopter rear, mounted on the receiver cover. The flash suppressor is shaped to accept NATO-standard rifle grenades. It can be fitted with an AKM-style multipurpose knife-bayonet.
| INSAS | |
|---|---|
| Type | Assault rifle |
| Place of origin | India |
| Service history | |
| In service | 1998—present |
| Used by | See Users |
| Wars | Kargil War Nepalese Civil War 2008 Mumbai attacks |
| Production history | |
| Designer | ARDE |
| Manufacturer | Indian State Ordnance Factory Board, Ishapore |
| Variants | See Variants |
| Specifications | |
| Weight | 4.25 kg (9.4 lb) empty 4.6 kg (10.1 lb) loaded |
| Length | 960 mm (37.8 in), 750 mm (29.5 in) w/stock folded |
| Barrel length | 464 mm (18.3 in) |
| | |
| Cartridge | 5.56x45mm NATO |
| Action | Gas-operated, Rotating bolt |
| Rate of fire | 650 rounds/min |
| Muzzle velocity | 900 m/s (2,953 ft/s) |
| Effective range | 450 Meters |
| Feed system | 20/30-round detachable box magazine |
The INSAS rifle is based on the famous Kalashnikov AK-47 action, but with many modifications. The basic gas-operated action (long stroke gas system, rotating bolt, and stamped steel receiver) is of the Kalashnikov pattern. The gas system is fitted with a manual gas regulator similar in design to that found on the FN FAL as well as a gas cutoff. The charging handle is positioned on the left side of the forearm; it is similar in position and design to the German HK G3 rifle.
The selector/safety switch is located on the left side of the receiver above the pistol grip, which allows single shots and three-round bursts. The rifle is fitted with a side-folding carrying handle, and either a solid or side-folding metal buttstock. Furniture is made of polymer with the stock using the butt-plate from Lee-Enfield rifles. Standard magazines are made from semi-translucent polymer and contain 20 rounds. Longer 30-round magazines of similar design are available for the INSAS LMG but can also be used in the rifle. The sights consist of a hooded front, mounted on top of the gas block, and a diopter rear, mounted on the receiver cover. The flash suppressor is shaped to accept NATO-standard rifle grenades. It can be fitted with an AKM-style multipurpose knife-bayonet.
The assault rifle version has semi-auto and 3-round burst modes much like the US M16A2. Derived from the INSAS weapon systems, the INSAS Excalibur Mark-I is ergonomically designed with a folding butt and can be fitted with 20 and 30-round magazines. It is also fitted with a Picatinny rail for mounting of opto-electronic devices. The INSAS Excalibur variant, to be used by Special forces, has semi-automatic and full automatic fire modes.
An under-barrel grenade launcher and bayonet have been developed for the INSAS, which are also compatible with the AK-47s used by paramilitary forces.
